<template>
  <div id="aCoursesList" class="bg-fa of">
    <!-- /课程列表 开始 -->
    <section class="container">
      <header class="comm-title">
        <h2 class="fl tac">
          <span class="c-333">我的文章</span>
        </h2>
        <nuxt-link
          :to="`/article/addArticle/${memberId}`"
          active-class="current"
        >
          <el-button
            plain
            type="primary"
            round
            size="default"
            icon="el-icon-plus"
            >写新文章</el-button
          >
        </nuxt-link>
      </header>
      <section class="c-sort-box">
        <section class="c-s-dl">
          <dl>
            <dt>
              <span class="c-999 fsize14">文章标签</span>
            </dt>
            <dd class="c-s-dl-li">
              <ul class="clearfix">
                <li>
                  <a title="全部" href="#" @click="queryAll">全部</a>
                </li>
                <li
                  v-for="(item, index) in subjectNestedList"
                  :key="index"
                  :class="{ active: oneIndex == index }"
                >
                  <a
                    :title="item.title"
                    href="#"
                    @click="searchOne(item.id, index)"
                    >{{ item.title }}</a
                  >
                </li>
              </ul>
            </dd>
          </dl>
          <dl>
            <dt>
              <span class="c-999 fsize14"></span>
            </dt>
            <dd class="c-s-dl-li">
              <ul class="clearfix">
                <li
                  v-for="(item, index) in subSubjectList"
                  :key="index"
                  :class="{ active: twoIndex == index }"
                >
                  <a
                    :title="item.title"
                    href="#"
                    @click="searchTwo(item.id, index)"
                    >{{ item.title }}</a
                  >
                </li>
              </ul>
            </dd>
          </dl>
          <div class="clear"></div>
        </section>
        <div class="js-wrap">
          <section class="fr">
            <span class="c-ccc">
              <i class="c-master f-fM">1</i>/
              <i class="c-666 f-fM">1</i>
            </span>
          </section>
        </div>
        <div class="mt40">
          <!-- /无数据提示 开始-->
          <section class="no-data-wrap" v-if="data.total == 0">
            <em class="icon30 no-data-ico">&nbsp;</em>
            <span class="c-666 fsize14 ml10 vam"
              >没有相关数据，小编正在努力整理中...</span
            >
          </section>
          <!-- /无数据提示 结束-->
          <article v-if="data.total > 0" class="comm-course-list">
            <ul class="of" id="bna">
              <li v-for="item in data.items" :key="item.id">
                <div class="cc-l-wrap">
                  <section class="course-img">
                    <img
                      :src="item.cover"
                      class="img-responsive"
                      :alt="item.title"
                    />
                    <div class="cc-mask">
                      <a
                        :href="'/article/' + item.id"
                        title="开始阅读"
                        class="comm-btn c-btn-1"
                        >开始阅读</a
                      >
                    </div>
                  </section>
                  <h3 class="hLh30 txtOf mt10">
                    <a
                      :href="'/article/' + item.id"
                      :title="item.title"
                      class="course-title fsize18 c-333"
                      >{{ item.title }}</a
                    >
                    <el-button
                      size="mini"
                      type="danger"
                      icon="el-icon-delete"
                      circle
                      style="float: right"
                      @click="removeArticleaById(item.id)"
                    ></el-button>
                    <el-button
                      size="mini"
                      type="primary"
                      icon="el-icon-edit"
                      circle
                      style="float: right"
                      @click.native="updateArticlePath(item.id)"
                    ></el-button>
                  </h3>
                  <section class="mt10 hLh20 of">
                    <span class="fl jgAttr c-ccc f-fA">
                      <i class="c-999 f-fA">{{ item.likeCount }}人点赞</i>
                      |
                      <i class="c-999 f-fA">{{ item.commentCount }}评论</i>
                    </span>
                  </section>
                </div>
              </li>
            </ul>
            <div class="clear"></div>
          </article>
        </div>
        <!-- 公共分页 开始 -->
        <div>
          <div class="paging">
            <!-- undisable这个class是否存在，取决于数据属性hasPrevious -->
            <a
              :class="{ undisable: !data.hasPrevious }"
              href="#"
              title="首页"
              @click.prevent="gotoPage(1)"
              >首</a
            >
            <a
              :class="{ undisable: !data.hasPrevious }"
              href="#"
              title="前一页"
              @click.prevent="gotoPage(data.current - 1)"
              >&lt;</a
            >
            <a
              v-for="page in data.pages"
              :key="page"
              :class="{
                current: data.current == page,
                undisable: data.current == page,
              }"
              :title="'第' + page + '页'"
              href="#"
              @click.prevent="gotoPage(page)"
              >{{ page }}</a
            >
            <a
              :class="{ undisable: !data.hasNext }"
              href="#"
              title="后一页"
              @click.prevent="gotoPage(data.current + 1)"
              >&gt;</a
            >
            <a
              :class="{ undisable: !data.hasNext }"
              href="#"
              title="末页"
              @click.prevent="gotoPage(data.pages)"
              >末</a
            >
            <div class="clear" />
          </div>
        </div>
      </section>
    </section>
    <!-- /课程列表 结束 -->
  </div>
</template>

<script>
import articleApi from "@/api/article";

export default {
  asyncData({ params, error }) {
    return {
      memberId: params.id,
    };
  },
  data() {
    return {
      page: 1, //当前页
      limit: 8,
      data: {}, //文章列表
      subjectNestedList: [], // 一级分类列表
      subSubjectList: [], // 二级分类列表
      searchObj: {}, // 查询表单对象
      oneIndex: -1,
      twoIndex: -1,
    };
  },
  created() {
    this.queryAll();
  },
  methods: {
    // 点击全部查询第一页全部数据
    queryAll() {
      // 点击全部分类是清空查询对象
      this.searchObj = {};
      //课程第一次查询
      this.initCourseFirst();
      //一级分类显示
      this.initSubject();
      this.searchOne({}, -1);
    },
    //1 查询第一页数据
    initCourseFirst() {
      articleApi
        .getArticleMemberList(this.page, this.limit, this.memberId)
        .then((response) => {
          this.data = response.data.data;
        });
    },

    //2 查询所有一级分类
    initSubject() {
      articleApi.getAllSubject().then((response) => {
        this.subjectNestedList = response.data.data.list;
      });
    },

    //3 分页切换的方法
    gotoPage(page) {
      articleApi.getArticleList(page, 8, this.searchObj).then((response) => {
        this.data = response.data.data;
      });
    },

    //4 点击某个一级分类，查询对应二级分类
    searchOne(subjectParentId, index = -1) {
      //把传递index值赋值给oneIndex,为了active样式生效
      this.oneIndex = index;
      this.twoIndex = -1;

      this.searchObj.type = "";
      this.subSubjectList = [];
      // 如果点击全部清空,传过来一个-1,使得active的样式清空,然后返回不查
      if (index === -1) return;
      //把一级分类点击id值，赋值给searchObj
      this.searchObj.type = subjectParentId;
      //点击某个一级分类进行条件查询
      this.gotoPage(1);

      //拿着点击一级分类id 和 所有一级分类id进行比较，
      //如果id相同，从一级分类里面获取对应的二级分类
      for (let i = 0; i < this.subjectNestedList.length; i++) {
        //获取每个一级分类
        let oneSubject = this.subjectNestedList[i];
        //比较id是否相同
        if (subjectParentId === oneSubject.id) {
          //从一级分类里面获取对应的二级分类
          this.subSubjectList = oneSubject.children;
        }
      }
    },

    //5 点击某个二级分类实现查询
    searchTwo(subjectId, index) {
      //把index赋值,为了样式生效
      this.twoIndex = index;
      //把二级分类点击id值，赋值给searchObj
      this.searchObj.type = subjectId;
      //点击某个二级分类进行条件查询
      this.gotoPage(1);
    },

    //根据文章ID删除文章信息
    removeArticleaById(articleId) {
      this.$confirm("此操作将删除该文章, 是否继续?", "提示", {
        confirmButtonText: "确定",
        cancelButtonText: "取消",
        type: "warning",
      }).then(() => {
        //点击确定，执行then方法
        //调用删除的方法
        articleApi.delArticleInfo(articleId).then((response) => {
          if (response.data.success) {
            this.$message.success('删除成功');
            //回到列表页面
            this.queryAll();
          }
        });
      }); //点击取消，执行catch方法
    },

    //跳转到更新文章的界面
    updateArticlePath(articleId) {
      this.$router.push({
        path: "/article/addArticle/" + this.memberId,
        query: { articleId: articleId },
      });
    },
  },
};
</script>

<style scoped>
.comm-title {
  display: flex;
  justify-content: space-between;
}
</style>
